Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Management of Cotton Pests Using Seed Treating Insecticide and Pyrethroids at Different Locations of Bangladesh

M.R. Amin
Department of Entomology, Hajee Mohammad Danesh Science and Technology University, Dinajpur

D.A. Tithi
Department of Entomology, Hajee Mohammad Danesh Science and Technology University, Dinajpur

H.M.S. Azad
Regional Cotton Research Station, Dinajpur

S.M.A. Hossain
Regional Cotton Research Station, Dinajpur

Abstract/ Executive Summary:

A seed treating insecticide Gaucho and the spray of a synthetic pyrethroid Ripcord 10 EC were used against cotton jassid, white fly, spotted bollworm and aphid at three locations viz. Dinajpur, Jessore and Gazipur of Bangladesh. The effect of Gaucho and Ripcord at different threshold level and farmer's management practices on the incidence of pest population were similar. At different locations number of spray varied with the incidence of pest threshold which effects the yield and benefit cost ratio. The results showed that seed treatment with Gaucho and foliar spray of Ripcord at all threshold levels gave significantly higher yield and profitable benefit cost ratio.

Keywords: Cotton pests, Seed treatment, Pyrethroid

Location: At three regional cotton research, training and seed multiplication farm namely Dinajpur, Jessore and Gazipur.

Start Date: 00-08-2005

End Date: 00-12-2006

Program Area: Pest Management

Commodity: Cotton

Objectives:

Seed dressing and spray formulations of many insecticides have been widely accepted for the management of cotton pests (Vastrad, 2003). Therefore, in this study a seed treating insecticide and a pyrethroid was evaluated to know their efficacy for the control of cotton pests.

Methodology:

The experiment was conducted during August to December 2005 and 2006 at three regional cotton research, training and seed multiplication farm namely Dinajpur, Jessore and Gazipur. The soil was sandy loam with pH 4.5 to 5.5. At all the station, previous crop was sunhemp as a green manure. The Land was prepared at field condition by deep ploughing and harrowing followed by laddering and irrigation was done as needed. The field layout was done after final land preparation. The experiment was conducted in randomized complete block design using the cotton variety CB9. The plot size was 10 × 10 m. The spacing between block-to-block and plot-to-plot were 1.5 and 1m and respective footpath was 2 m. Seeds were sown on 1st week of August 2005 and 2006, at the rate of 15 kg / ha in a north-south row. The seeds were sown by hand keeping a distance of 45 cm from plant to plant and row-to-row distance was 90 cm. Necessary intercultural operations like mulching, weeding and fertilizer application were done properly. The experiment was conducted with seed treating chemical, Gaucho @ 6 g / kg seed and foliar spraying of synthetic pyrethroid Ripcord 10 EC @ 3 ml/L water. Spraying was done on 1st, 2nd, 3rd and all observed threshold level of pests by using a knapsack sprayer. An observation was made on the traditional farmer's management practice which was done by foliar spraying of chemical insecticides Asataf 75 SP and Ripcord 10 EC. To estimate the incidence of pests, sampling was done from the cotton field throughout the cotton growing season (August to November). It was done by weekly scouting taking 5 plants randomly from each replication. Plants were examined for jassid, white fly, aphid and spotted bollworm. The presence of aphid was estimated on a scale 0 - 4 (0 no aphid,1 few aphids, 2 one leaf or growing point infested, 3 more than one leaf or growing point infested, 4 entire plant heavily infested). Newly growing parts with two fully expanded leaves were examined for sucking pests. A scouting form was used during estimation of the pests. Variable cost and net return was calculated as per Tague and Shelstad (1981). The benefit cost ratio was calculated by dividing the net return by total variable cost. Data of the different parameters were analyzed by ANOVA and the mean values were separated by Duncan's Multiple Range Test (DMRT).

Source of Information: J. Sci. Technol. (Dinajpur) Vol. 7:-----(2008) ISSN 1994-0386

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

In this study, though the effect of seed treating chemical Gaucho and foliar spray of synthetic pyrethroid Ripcord 10 EC on the incidence of pest population found statistically similar but at all tree locations they showed lower number of pest threshold which significantly effect on the production of yield. Lower number of threshold level also required lower number of spray and accounted lower variable cost which gave profitable benefit cost ratio. Synthetic pyrethroids, with their combination of favourable properties, may have an importance comparable with organochlorine compounds, organophosphates and carbamates that are used on a large scale. The result in this study is not only an effective, but also an economical pest management option. Threshold spray usually justifies the use of control measures and resulted more profit (Ali and Karim, 1990). Therefore, application of these products in the threshold level might uphold a positive impact to control the sucking and chewing pests of cotton.

Knowledge Management: Journal